1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
padilas [110]
3 years ago
15

PLEASE HELP!! In triangle ABC, B= 120 degrees, a=10, c=18, find C

Mathematics
2 answers:
S_A_V [24]3 years ago
7 0
Add all of them then subtract from 180
sveta [45]3 years ago
7 0
Check the picture below.  Notice that we can always solve for the cosine and simply use the sides alone to get an angle.

\bf cos^{-1}\left(\cfrac{10^2+(\sqrt{604})^2-18^2}{2(10)(\sqrt{604})}  \right)=\measuredangle C
\\\\\\
cos^{-1}\left(\cfrac{100+604-324}{20\sqrt{604}}  \right)=\measuredangle C \\\\\\
cos^{-1}(0.77309903583)\approx \measuredangle C\implies 39.366998916677^o\approx \measuredangle C

You might be interested in
In the summer a large pool evaporates water at 15% per day. If the pool starts out with 25,700 gallons of water, which function
JulijaS [17]

Answer:

y=25,700(0.85)^{x}

Step-by-step explanation:

we know that

In this problem we have a exponential function of the form

y=a(b)^{x}

where

y ----> represent the pool’s loss of water

x ----> the number of days

a is the initial value

a=25,700 gal

b ----> is the base

r=15%=15/100=0.15

b=(1-r)=1-0.15=0.85

The function is equal to

y=25,700(0.85)^{x}

8 0
3 years ago
There are 42 children in the classroom each student will get 28 pencils and 46 erasers how many pencils will the teacher have to
Aleksandr-060686 [28]

Since the question is asking how many pencils the teacher will have to give out, we can automatically ignore the 46 erasers from the problem because it is not relevant. The information was most likely put there to confuse you.

Each student is getting 28 pencils, so if we multiply the number of students by 28 pencils, we will find how many pencils the teacher will need to give out.

There are 42 children in the classroom, so multiply 42 by 28.

42 * 28 = 1,176

The teacher will have to give out <u>1,176 pencils</u> to her 42 children in the classroom.

4 0
3 years ago
Read 2 more answers
Can someone please help meee
Vesna [10]

Answer:

option 3

Step-by-step explanation:

all other angles are  interior and exterior

8 0
3 years ago
Read 2 more answers
Please solve and show steps for both 23 and 24
const2013 [10]
23. The answer is D. If you multiply 0.8 by 5 you get 4 meters which means it would take 5 minutes. Multiplying it by 5 will give you a whole number therefore easier to find on the graph.

24. The answer is G. The square root of 5 is 2.23 and the square root of 2 is 1.4
3 0
3 years ago
A store offered a 20% price discount on all items on Friday. By what fraction of the discounted price of an item did the price i
grin007 [14]

Answer:

What were two of the important points found in the Monroe Doctrine?

All European nations had to give up their colonies and allow for individual autonomy.

The United States would not allow additional colonization of Latin American nations.

America would not interfere with already established Latin American colonies.

All trade agreements with Latin American nations had to go through the United States.

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Kevin made 12 5/6 bags of popcorn for a movie night with some friends. Together they ate 7 1/6 bags of it. How much popcorn was
    10·1 answer
  • What is the simplest form of the fraction that represents 0.3333...?
    11·2 answers
  • An equation of the line tangent to y=sin x + 2cosx at (pi/2, 1) is?
    8·1 answer
  • What is the arc length if θ = 2 pi over 7 and the radius is 3 cm?
    7·2 answers
  • What is an equation for the line that passes through points (8.-3) and (9, 10)?
    12·1 answer
  • (3^2 +4) -6+4=<br><br> {^ means power to...}
    9·1 answer
  • What is the square root of 1,459,585 and show work
    9·1 answer
  • Graph the function g(x) = -3 / (x²- 4) . What is the domain of g(x)? Explain your reasoning. Do not completely trust calculator
    13·1 answer
  • If 600 students at the school took the SAT, how many scored in the 701 to 1000 range?
    8·1 answer
  • I really need help with this or i'll get and F
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!